6. Technical: "Technical Notes 19B - Residential Chimneys - Design and Construction" is a great document for the technical information as well as the general understanding of chimneys that it provides. Available on the excellent website of the Brick Industry Association.
7. Technical: Safety: “A Huff, and a Puff, and…It Blew the Chimney Down” covers “how the lack of design, construction, and code requirements results in chimneys lacking sufficient capacity to resist below design wind loads leading to unsafe conditions.” Available on the Nelson Forensics website.